Required_Code_Mod03.ipynb

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    "# Module 3 Required code  \n",
    "  \n",
    "\n",
    "## Note: Students of Dev330x on edX\n",
    "\n",
    "> ### It is required to submit your required code for Module 3 within the edX course   \n",
    "> The completed code must be copied from the cell below and pasted in to the edX required code page at the end of Module 3 in the course \"Introduction to Python: Creating Scalable, Robust, Interactive Code\" on edX.  \n",
    ">  \n",
    "> **REQUIREMENTS**  \n",
    "> Submit all of the code in working order, you will only be graded on correct completion tasks below:\n",
    "- Use the inventory dictionary in a program that asks the user for a UPC number, description, unit price, quantity in stock.  \n",
    "- If the item already exists in the inventory, the information is updated, and your program should display a message that it is updating the entry.  \n",
    "- If the item does NOT exists in the inventory, a new dictionary entry is created, and your program should display a message that it is creating a new entry.  \n",
    "- Use try/except in the program. \n",
    "- **use the following required keywords & functions:** `try`, `except`, `int`, `input`,`.format`"
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    "<font size=\"6\" color=\"#B24C00\"  face=\"verdana\"> <B>Required Code Module 3</B></font>  \n",
    "\n",
    "### Complete the Required Code in the Jupyter Notebook Required_Code_Mod03 and then paste into edX code submission page   \n",
    "\n",
    "This is the same code assignment located as **Task 7,  Dictionary: Updating/adding an item** in 3-3.5_Mod03_Practice.ipynb\n",
    "\n",
    "## Dictionary: Updating/adding an item  \n"
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    "# [ ] Use the `inventory` dictionary in a program that asks the user for a \n",
    "#     UPC number, description, unit price, quantity in stock.\n",
    "# If the item already exists in the inventory, the information is updated, \n",
    "#     and your program should display a message that it is updating the entry.\n",
    "# If the item does NOT exists in the inventory, a new dictionary entry is created, \n",
    "#     and your program should display a message that it is creating a new entry.\n",
    "# Use try/except in the program.\n",
    "\n",
    "\n",
    "# test cases\n",
    "\n",
    "# For an existing item\n",
    "'''\n",
    "Enter UPC number: 839529\n",
    "Enter item description: TOMATOS 1LB\n",
    "Enter unit price: 1.55\n",
    "Enter item quantity: 21\n",
    "Existing item, updating: ['TOMATOS 1LB', 1.29, 25]\n",
    "\n",
    "  UPC   | Description       |  Unit Price  |  Quantity \n",
    "-------------------------------------------------------\n",
    "839529  | TOMATOS 1LB       |         1.55 |      21.00\n",
    "'''\n",
    "\n",
    "# For a new item\n",
    "'''\n",
    "Enter UPC number: 29430\n",
    "Enter item description: ORANGE 1LB\n",
    "Enter unit price: 0.99\n",
    "Enter item quantity: 40\n",
    "New item, creating ORANGE 1LB\n",
    "\n",
    "  UPC   | Description       |  Unit Price  |  Quantity \n",
    "-------------------------------------------------------\n",
    "29430   | ORANGE 1LB        |         0.99 |      40.00\n",
    "'''\n",
    "\n",
    "inventory = {847502: ['APPLES 1LB', 1.99, 50], 847283: ['OLIVE OIL', 10.99, 100], 839529: ['TOMATOS 1LB', 1.29, 25], 483946: ['MILK 1/2G', 3.45, 35], 493402: ['FLOUR 5LB', 2.99, 40], 485034: ['BELL PEPPERS 1LB', 1.35, 28], 828391: ['WHITE TUNA', 1.69, 100], 449023: ['CHEESE 1/2LB', 4.99, 15]}\n",
    "\n",
    "\n",
    "# get UPC from user, handling cases where the input is invalid with try/except\n",
    "#TODO: Your code goes here\n",
    "\n",
    "# display message, either \"updating\" or creating\" and then item is being updated display the `value` being updated\n",
    "#TODO: Your code goes here\n",
    "\n",
    "# update dictionary entry\n",
    "#TODO: Your code goes here\n",
    "\n",
    "# print header including \n",
    "# HINT: look at the testing samples shown in comments above for new item and for existing item\n",
    "#TODO: Your code goes here\n",
    "\n",
    "# print actual data from the dictionary (See Hint above)\n",
    "#TODO: Your code goes here\n",
    "\n",
    "\n"
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    "### Test your graded code  \n",
    "Use the supplied data and make sure the output running code above looks the same\n",
    "\n",
    "Complete the Required Code in the Jupyter Notebook Required_Code_Mod03 and then paste into edX code submission page\n",
    "#### Test 1  \n",
    "```  \n",
    "Enter UPC number: 839529\n",
    "Enter item description: TOMATOS 1LB\n",
    "Enter unit price: 1.55\n",
    "Enter item quantity: 21\n",
    " \n",
    "```  \n",
    "#### Expected Result Test 1  \n",
    "```  \n",
    "Existing item, updating: ['TOMATOS 1LB', 1.29, 25]\n",
    "\n",
    "  UPC   | Description       |  Unit Price  |  Quantity \n",
    "-------------------------------------------------------\n",
    "839529  | TOMATOS 1LB       |         1.55 |      21.00\n",
    "```  \n",
    "\n",
    "#### Test 2   \n",
    "```  \n",
    "Enter UPC number: 29430\n",
    "Enter item description: ORANGE 1LB\n",
    "Enter unit price: 0.99\n",
    "Enter item quantity: 40\n",
    "```  \n",
    "#### Expected Result Test 2  \n",
    "```  \n",
    "New item, creating ORANGE 1LB\n",
    "\n",
    "  UPC   | Description       |  Unit Price  |  Quantity \n",
    "-------------------------------------------------------\n",
    "29430   | ORANGE 1LB        |         0.99 |      40.00\n",
    "```  "
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